Miter-gage



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NO zQzO, Patented Apr. 1,1884.

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E. HIPOLITO.

MITBR GAGE.

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CAMPBELL, or Los ANenLns, CALIFORNIA.

MiTER-GAGE SPECIFICATION forming part of Letters Patent N. 295,920,dated April 1, 1884.

i Application filed June 6, 1883. (Model.)

To all whom it may miccia/1,.-

Be it known that I, EsrinrnroN HiroLIrro, acitizen of the United States,residing at the city of San J ose, in the county of Santa Clara andState of California, have invented a new and useful Improvement inMiter-Gages, of `which the following is a specification.

My invention relates to that class of mitergages in which there aremovable guideways for the saw.

The object of my invention is to provide a simple and easily-adj ustablegage, by meansof which the saw may be accurately guided `to cut at anydesirable angle. This object I accomplish by means of the devicedescribed herein and illustrated in the accompanying drawings, inwhich-Figure l2 is a view of the gage attached to its base, the posit-ion ofthe saw when in use being shown in dotted lines. Fig. l is a view of thelower part of the post I and standard A, showing the manner of attachingthe gage to the base G. Fig. 2 is a front view of the gage attached toits base G, showing thewing which guides the saw opened to its widestextent. Fig. 3 is a plan view of Fig-2, showing also, in dotted lines,the wing E F swung around to 'hold the saw in` position to cut at anangle of forty/five degrees. Fig. et is a sectional view ofthe standardA, taken on 2. Fig. 5 is a sectional view of the standard A, 4taken ondotted line l 2, Fig. 6, showing the lower hinge, D, in outline. Fig. 6is an obverse View of Fig. 2, showing the leaf F of the wing. Fig. 7 isa sectional view of the slotted post I on line 1 2, Fig. 6. Fig. `8 is aview of the slotted post I,

` with the hinges` G and D, set-screw L, and

. standard A, the letters E and` F referring to 1l is a section of therod K on line 6, Fig. 9.

` the gage.

A is au upright standard for the support of In its lower end there is a'longitudinal slot, marked aperture7 in the drawings, through which`abolt, N, passes to secure the standard to its base G. A spanner,

M, screws upon the end of the bolt, and by its friction upon thestandard retains it at any height and in the position desired. Thisstandard has a plain surface upon its front or inner side, to 4serve asa straight-edge to hold the timber straight while being cut. At the Atopand bottom of the standard A are mounted hinges C and D, `between whichthe post I is mounted upon arbors formed on its ends.

The post I is formed of two parts, which are i joined at the top andbottom to form solid bearings for the arbors, but are separatedthroughout their greater length by a slot, Z. There is a leaf, E,attached to that side of the post which/is next to the standard A, Aleaf, F, is attached tothe other side of the post. These two leavesconnect the rod K with the post I, and form the wing to guide the saw.The rod K is dit ided into longitudinal halves,

m.. The inner sides of the leavesE and F are fluslrwith the inner sideof their respective` halves of the rod K and post I, so Ythatap'lainsurface is presented for the saw through the passage-way between theplates or leaves. The leaves may be made of iron or other suitablematerial, and. of a singlepiece with their respect-ive halves of the rodK and post I; but if the post and rod be made of metal, as I believewill usually be found to be desirable, the inner sides should be linedwith wood or some other suitable material which will not dull the teethAof the saw when they come in contact therewith.

The post I is prOVided'with a screw, L, by means of which its sides maybe drawn together to reduce the width of the slot Z. The screw m servesa similar purpose upon the rod K.

A semicircular arm, B, is rigidly mounted upon the front side of theleaf E, and extends through a hole in the standard A, where it issecured by the set-screw S. This arm is marked' in degrees, so that thewing maybe set to guide the saw at any desired angle. The hole in thestandard and the point upon the leaf where the arm B is mounted are atequal distances from the axis ofthe post I, so that as the wingis swungto and fro the arm will freely pass through the hole. The bottom oftherod Y K is nearly on a level with the top ofthe slot or which are heldtogether at the top by ascrew, j

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grooves being formed in the rods for that pur- "Qpose, so that when thelining has been worn out it may be replaced. This lining may be of anysuitable material which is tirm enough for the purpose, and will notdull the saw.

The base to which the gage is attached may be of any desired width, andhas a bolt, N. rmly attached to it or passing through it, and projectingfar enough from it to pass through the slot in the standard and receivethe spanner M, by which the standard is secured. This base may be astrip of lumber, used simply as a support for the gage, or it may be thetop ot the work-bench orany other suitable support.

There are gage-lines upon the inner face of the standard A. These linesare at different angles with the axis of the post I. Thelines r r r areat right angles therewith, so that when they are parallel with the topof the base the saw will cut perpendicularl y through the timber:Thelinesfp p p are at an angle of forty-five degrees with the axis, sothat when they are parallel with the top ofthe base the saw will cutthrough thetimber atan angle of fortytive degrees. Lines at other anglesmay be added, if desired.

The following is a description ofthe manner in whichI use my gage:Having attached it to the base or bench G, I loosen the spanner M andraise orlower to the desired height. Ithen adjust it to the propervertical angle by making the lines upon the standard indicating suchangle coincide with the top of the base. I then tighten the Spanner tosecure the standard in p1ace,and swingthewingrounduntilthegraduation-mark upon the arm B,indicating thehorizontal angle desired, coincides with the edge of the standard. Thegage is now ready for use. I place the timber upon the base, and,pressing it firmly against the standard, so as hold it paralleltherewith, I place the saw in the guideway formed by the space betweenthe leaves E and F and the slots in the post and rod and proceed to cutthe timber.

, The gage may be ot' different sizes and dimensions, to suit differentgrades of work.

By this simple means, it will be seen, I am enabled to accurately adjustthesaw to the angle, both horizontal and vertical, desired.

Now, having described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The miter-gage consisting of a base, a vertical adjustable standard,a slotted rotating post, a guiding-wing havifng two leaves with apassageway between them, and a curved graduated arm, all in combinationsubstanf tially as and for the purpose set forth.

2. In a miter-gage, a broad upright sawguide-supporting standard,adjustably mounted, substantially as shown, upon a base having astraight, flat upper surface, said standard being i'lat and plain uponthe face or side next to the base, and having linear markings crossingsaid face at various. angles, and corresponding with the surface of thebase at the line of contact as thestaudard is adjusted at differentangles of inclination, all being substantially as shown and described,whereby the sawguiding apparat-ns may be accurately adjusted to guidethe saw at various angles with the base.

3. In a miter gage, two longitudinallyslotted saw-guiding posts or rodsconnected by plates attached to the respective halves of the rods,substantially as shown, so that the inner faces ofthe plates form apassage for the saw continuous with the slots in the rods, each rodhaving its separate halves connected by a set-screw, substantially asshown, whereby the width of the passage through the slots in the rodsand between the plates may be regulated.

4. In a initergage, slotted saw -guiding posts or rods having a separatelining of wood, substantially as set forth, whereby the lining may bereplaced when worn out, and the saw will not be dulled by cont-act withthe rod.

5. In a miter-gage, a saw-guide-supporting standard having alongitudinal slot therein, and being in combination with the base, bolt,and spanner, substantially as shown, whereby the guiding apparatus maybe elevated and lowered, and may be given any vertical angle desired.

ESPIRIDION HIPOLI'IO.

Vitnesses:

I. WV. DooNER, NELsoN H. MURRAY.

